PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Just remember these two important things in marble cleaning: first, marble stones are soft, thus, they easily get stained; and second, never use vinegar or other corrosive cleaning products because these can damage the marble???s quality.
http://www.w3.org/ns/prov#wasQuotedFrom
  • marblepolishing.net